Yeah, scalers and OSDs are going to be the hardest things to give up.
I will admit ... it's painful using my ZR30w with no scaler. I can't connect my PSP's component out to it, I can't hook up my Wii U, I can't connect my XRGB Mini, my Raspberry Pi, etc ... because none of them output at 2560x1600.
Even worse, the DisplayPort connector stopped working on it (hooray, $1300 monitor quality!!), so all I have is one DVI port left, which can't even output at the 30-bit color depth which was a big part of why I wanted this monitor :(
The ironic thing about OSDs causing input lag is that the very systems we emulate prove that video overlays are trivial to implement without buffering.
I will admit ... it's painful using my ZR30w with no scaler. I can't connect my PSP's component out to it, I can't hook up my Wii U, I can't connect my XRGB Mini, my Raspberry Pi, etc ... because none of them output at 2560x1600.
Even worse, the DisplayPort connector stopped working on it (hooray, $1300 monitor quality!!), so all I have is one DVI port left, which can't even output at the 30-bit color depth which was a big part of why I wanted this monitor :(